dibromoWiktionary 原文构词拆分di-前缀Two. · Double, twice the quantity.+bromo词根/词干词源说明From di- + bromo.释义（英文）名词 Noun(organic chemistry, especially in combination) Two bromo groups in a molecule词族派生词（4）dibromobutanedibromoethanedibromoterfluorenemitobronitol